The Association of Southeast Asian Nations also known as ASEAN is a regional organization that promotes the cooperation of politics, economics, military and socio-cultural between its members. Nowaday, there are 10 members states consist of Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam. Timor Leste and Papua New Guinea are considered as an observer state. Asean was established on the 8 August 1967 in Bangkok, Thailand with the signing of the ASEAN Declaration, made this known as Bangkok Declaration by the five original member countries as Philippines, Singapore, Indonesia, Malaysia and Thailand. With the following of Brunei, Vietnam, Laos, Myanmar and Cambodia, respectively. Accelerate the economic growth, social progress and cultural development in the region in order to strengthen the foundation for a prosperous and peaceful community of Southeast Asian nations are the objectives of ASEAN as these stated in the Bangkok Declaration.As this year marks as the 50th Anniversary of ASEAN, in my opinion ASEAN has admirable developed and improved itself in many ways but still has both success and failure during its journey throughout 50 years. As the objectives of ASEAN are to accelerate the economic growth, social progress and cultural development in the region as well as to unite the countries in Southeast Asia region. In my point of view, ASEAN has reached all of its objective in a very positive way. ASEAN had made them through Economic, Cultural and Sport.In the Economic aspect, the AEC which stand for ASEAN Economic Community was established in 2015 which the aim is to promote the cooperation in the area of politic and economic as the idea was to make ASEAN towardly become worldwide competitive single market and production base, competitive economic region with a free flow of goods, services, equitable economic development and fully integrated into the global economy. As in 2017, There are approximately 648,780,000 people in the 10 countries of ASEAN with the total gross domestic product of 7.6 trillion u.s. dollars which if we consider ASEAN as one country, it will have more gross domestic product more than some powerful countries in the world such as Japan with 5 trillion U.S. dollars, Germany with 4.7 trillion U.S. dollars and United kingdom with 4.6 trillion U.S. dollars. AEC had benefit ASEAN in many ways. Firstly, in the point of having more power in negotiation of trade agreements with other powerful countries as ASEAN countries grouped up, they could use their strength and advantage of each country to make the best of production and service. Secondly, there are reducing of the tariff barrier between ASEAN member states, as ASEAN countries can get a low price for the supply they need and when the cost of ingredient has lower which make the price of the product lower, there will be increased in economic welfare and trade of countries because people want to buy a cheap product based on the rule of demand-supply. Thirdly, developed potential and preparedness of each countries in ASEAN including to face the each global challenging.There are many progresses that ASEAN used to developed and improved itself. ASEAN Free Trade Area(AFTA) is also one of many processes that ASEAN develop which aim to support local manufacturing in ASEAN countries. ASEAN Free Trade Area has attract a lot of foreign direct investment in ASEAN including China, the European Union, Japan and United states which has raised from $85 billion to $136 billion between 2007 to 2014. Not only AFTA but also ASEAN Investment Area(AIA), Asean framework agreement on services and ASEAN Single Aviation Market (SAM). These are huge steps of ASEAN as the tended to develop into the global stage. I think ASEAN has followed the right path in the economic. Overall ASEAN has success journey in the aspect of economic in the past 50 years. In the culture aspect, As social progress and cultural development are two of the objectives of ASEAN. ASEAN has established the pillar called ASEAN Socio-cultural community(ASCC) which aim to contribute people to feel the benefits of being part of ASEAN, has socially responsible for it and also unity among the people and countries of ASEAN.